I had my phone for less than 3 months and it says that I don’t have enough storage in my iCloud why?

Read this article:

About storage on your device and in iCloud - Apple Support

it will help clear it up for you.

Good luck!

No one here knows how you are using your phone. The free 5 GB storage is only going to be enough for basic iCloud usage.

marialuisa145 wrote:

Why I don’t have storage in my I cloud I just boy my phone less that 3 month

Are you certain you don't have enough storage in iCloud or is it your device? More details.